Friday, October 27, 2017

The reconstructed Slidex card

At Crypto museum
I saw that they’ve
uploaded some Slidex cards from 1944. I had a quick look to see if I could
locate the one solved by the German codebreakers and found in the report
E-Bericht FNASt 9 (US National archives - RG 457 - Entry 9032 - box 22 ‘German deciphering reports’).

I didn’t
expect to find anything so imagine my surprise when I saw that the Air Support
Signals Unit card No. 1 (from 1944) had the same code values: